Alternating Current and AC Motor Calculations
Electrical formulas are often required for "alternating current" voltage types. To simplify the process,
we have extended the "Online Calculator" section for you with the formulas listed below.
S = V x I
P = V x I x cos φ
Q = V x I x sin φ
cos φ = P / S
sin φ = Q / S
Measuring Units:
Apparent power S = Kilovolt-ampere [KVA]
Real power P = Kilowatt [kW]
Reactive power Q = Kilovoltampere reactive [KVAr]
Voltage V = Volt [V]
Current I = Ampere [A]
cosφ no measuring unit
sin φ no measuring unit